Well, if you're referring to 60x, at the time "They were the strings to get" so I got a pair a few years back, but them on, 300 plus shots, (months) and I'm bear hunting and wala......... twist. So, if 60x is the issue, fair enough, but I've heard way to many people say "Good strings don't twist" when yes, they do in my experience. It's just when will they stop.
If a guy doesn't have a press, and is relying on the shop to keep it straight, it can be frustrating. I've shot a compound with a rubber tube for I don't know, maybe 15 years and never had one issue at all, and that I can say with absolute certainty.